Metadata = null for some assets

Technical Issue Reporting
#1

For collection: Blank NFT
Address: 0x9ef14cc7c558a70fbb6480ce58042feebaa1972e
Token IDs: 1852, 1849

metadata is null.

for other token IDs like 1848, 1850, 1851 metadata is correct.

#2

https://docs.moralis.io/misc/faq#why-is-it-null

#3

any ETA?
(its 18 days old collection)